I bought a common quail 2 years ago out of pity since the cage he was living in before was very small and the wiring was too large for his feet. He's always super social and every spring/summer he does his mating calls non stop. This spring came around and his mating calls increased by A LOT like usual, all up until two days ago. I left my apartment in the morning and he seemed normal but when I came back at around 2 he was sleeping in the middle of the day with his feathers fluffed up. When I tried singing and talking to him he would just open his eyes slightly and sometimes make a few low chirps. I noticed my apartments was very very hot inside (more than he's used to) so I figured it was just the overheating and took him over to my boyfriend's house since it's large, ventilated, and cool. Since then he's seemed a little better but still no mating calls, no singing/talking, and very little activity. His eyes are also still mostly half open all the time or he'll just be sleeping. I don't really know what's wrong? All the "sick bird symptoms" I've been reading about are extreme and don't fit. His feces appear normal, he's normal weight, and he's drinking and eating plenty it seems. The only things that are wrong are that he's sleeping a lot and not being social and when he's awake his eyes are half open.